docs: def getStartdatetime(self):
          """
          Returns the date and starttime as datetime object
  
          Parameters
          ----------
          None
  
          Examples
          --------
          >>> import pyedflib
          >>> f = pyedflib.data.test_generator()
          >>> f.getStartdatetime()
          datetime.datetime(2011, 4, 4, 12, 57, 2)
          >>> f._close()
          >>> del f
  
          """
          return datetime(self.startdate_year, self.startdate_month, self.startdate_day,
                                   self.starttime_hour, self.starttime_minute, self.starttime_second)